Rhynchospora pallida M.A.Curtis

Pale beaksedge (en)

Species

Angiosperms > Poales > Cyperaceae > Rhynchospora

Characteristics

Plants perennial, cespitose, 40–100 cm, base bulbous; rhizomes stoloniferous, short, wiry. Culms erect or excurved, linear, leafy, trigonous, slender. Leaves slightly to much exceeded by culm; blades ascending, narrowly linear, proximally flat, 1–3 mm wide, apex trigonous, tapering gradually, setaceous. Inflorescences terminal; spikelet single, terminal cluster of spikelets crowded, hemispheric, 2.5 cm wide; leafy bracts linear setaceous, much exceeding cluster. Spikelets whitish to tan, narrowly lanceoloid, (3.5–)4–5.5 mm, apex acuminate; fertile scales lanceolate, 3.5–4(–4.5) mm, apex narrowly acute, minutely awned or apiculate. Flowers: bristles vestigial or obsolete. Fruits 1 per spikelet, (1.9–)2–2.3 mm; body brown with pale center, lenticular, broadly ellipsoid, 1.5–2 × 1.5 mm, margins flowing to tubercle; surfaces longitudinally finely striate; tubercle depressed triangular, 0.2–0.3(–0.4) mm.
More
Stems 3–8 dm, usually surpassing the lvs, loosely clustered or solitary, bulbous-thickened at base and producing short, bulbous-tipped rhizomes; infl a dense hemispheric fascicle 1–2.5 cm thick, subtended by 2 unequal divaricate bracts; spikelets silvery to reddish, ovoid-attenuate, 4.5–5 mm, with a solitary perfect terminal fl; bristles 0–3, up to a fourth as long as the achene; stamens 2; achenes obovate, 1.2–1.6 mm, nearly as wide, smooth, brown with a pale central spot; tubercle broadly conic, 0.2–0.3 mm. Acid bogs along the coast; L.I. to N.C.
Stems 3–8 dm, usually surpassing the lvs, loosely clustered or solitary, bulbous-thickened at base and producing short, bulbous-tipped rhizomes; infl a dense hemispheric fascicle 1–2.5 cm thick, subtended by 2 unequal divaricate bracts; spikelets silvery to reddish, ovoid-attenuate, 4.5–5 mm, with a solitary perfect terminal fl; bristles 0–3, up to a fourth as long as the achene; stamens 2; achenes obovate, 1.2–1.6 mm, nearly as wide, smooth, brown with a pale central spot; tubercle broadly conic, 0.2–0.3 mm. Acid bogs along the coast; L.I. to N.C.
Life form perennial
Growth form herb
Growth support free-standing
Foliage retention deciduous
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 0.4 - 1.0
Root system rhizome
Rooting depth (meter) -
Root diameter (meter) -
Flower color -
Blooming months -
Fruit color -
Fruiting months -
Nitrogen fixer -
Photosynthetic pathway -

Environment

Light -
Soil humidity -
Soil texture -
Soil acidity -
Soil nutriment -
Hardiness (USDA) 4-9

Usage

Uses -
Edible -
Therapeutic use -
Human toxicity -
Animal toxicity -

Cultivation

Mode -
Germination duration (days) -
Germination temperacture (C°) -
Germination luminosity -
Germination treatment -
Minimum temperature (C°) -
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Distribution

Rhynchospora pallida world distribution map, present in Nicaragua and United States of America

Identifiers

LSID urn:lsid:ipni.org:names:312348-1
WFO ID wfo-0000519324
COL ID 4STBP
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Rhynchospora pallida Phaeocephalum pallidum Rhynchospora curtisii